make django-helpdesk more customizable + bug fixes:

- look at settings.py for all new options regarding customization.
- settings can be accessed inside the templates via the new
  templatetag 'load_helpdesk_settings'

- allow editing of personal followups, but only if followup does not
  contain any ticketchanges - otherwise this information is lost after
  the editing.
- add 'delete' link to attachments
- link to list of closed tickets in queue overview
- add 'closed & resolved' section to dashboard
- hide 'pre-set reply' box if no pre-set replies are found.
- use 'SelectDateWidget' for custom DateField

- fix how we update followups so that attachments don't get deleted
- fix bug where resolution emails contained the solution 'None'
- fix stats crashing bug
- fix locale bug

helpdesk/settings.py

@@ -28,5 +28,59 @@ if type(DEFAULT_USER_SETTINGS) != type(dict()):
             'tickets_per_page': 25
             }
 
+''' generic options - visible on all pages '''
+# redirect to login page instead of the default homepage when users visits "/"?
+HELPDESK_REDIRECT_TO_LOGIN_BY_DEFAULT = getattr(settings, 'HELPDESK_REDIRECT_TO_LOGIN_BY_DEFAULT', False)
+
 # show knowledgebase links?
 HELPDESK_KB_ENABLED = getattr(settings, 'HELPDESK_KB_ENABLED', True)
+
+# show extended navigation by default, to all users, irrespective of staff status?
+HELPDESK_NAVIGATION_ENABLED = getattr(settings, 'HELPDESK_NAVIGATION_ENABLED', False)
+
+# show 'stats' link in navigation bar?
+HELPDESK_NAVIGATION_STATS_ENABLED = getattr(settings, 'HELPDESK_NAVIGATION_STATS_ENABLED', True)
+
+# set this to an email address inside your organization and a footer below
+# the 'Powered by django-helpdesk' will be shown, telling the user whom to contact
+# in case they have technical problems.
+HELPDESK_SUPPORT_PERSON = getattr(settings, 'HELPDESK_SUPPORT_PERSON', False)
+
+
+''' options for public pages '''
+# show 'view a ticket' section on public page?
+HELPDESK_VIEW_A_TICKET_PUBLIC = getattr(settings, 'HELPDESK_VIEW_A_TICKET_PUBLIC', True)
+
+# show 'submit a ticket' section on public page?
+HELPDESK_SUBMIT_A_TICKET_PUBLIC = getattr(settings, 'HELPDESK_SUBMIT_A_TICKET_PUBLIC', True)
+
+
+''' options for update_ticket views '''
+# allow non-staff users to interact with tickets? this will also change how 'staff_member_required' 
+# in staff.py will be defined.
+HELPDESK_ALLOW_NON_STAFF_TICKET_UPDATE = getattr(settings, 'HELPDESK_ALLOW_NON_STAFF_TICKET_UPDATE', False)
+
+# show edit buttons in ticket follow ups.
+HELPDESK_SHOW_EDIT_BUTTON_FOLLOW_UP = getattr(settings, 'HELPDESK_HIDE_EDIT_BUTTON_FOLLOW_UP', True)
+
+# show ticket edit button on top of ticket description.
+HELPDESK_SHOW_EDIT_BUTTON_TICKET_TOP = getattr(settings, 'HELPDESK_SHOW_EDIT_BUTTON_TICKET_TOP', True)
+
+# show ticket delete button on top of ticket description.
+HELPDESK_SHOW_DELETE_BUTTON_TICKET_TOP = getattr(settings, 'HELPDESK_SHOW_DELETE_BUTTON_TICKET_TOP', True)
+
+# show hold / unhold button on top of ticket description.
+HELPDESK_SHOW_HOLD_BUTTON_TICKET_TOP = getattr(settings, 'HELPDESK_SHOW_HOLD_BUTTON_TICKET_TOP', True)
+
+# make all updates public by default? this will hide the 'is this update public' checkbox
+HELPDESK_UPDATE_PUBLIC_DEFAULT = getattr(settings, 'HELPDESK_UPDATE_PUBLIC_DEFAULT', True)
+
+
+''' options for dashboard '''
+# show delete button next to unassigned tickets
+HELPDESK_DASHBOARD_SHOW_DELETE_UNASSIGNED = getattr(settings, 'HELPDESK_DASHBOARD_SHOW_DELETE_UNASSIGNED', True)
+
+
+''' options for footer '''
+# show 'API' link at bottom of page
+HELPDESK_FOOTER_SHOW_API_LINK = getattr(settings, 'HELPDESK_FOOTER_SHOW_API_LINK', True)